Graph the function and the indicated tangent line.Graph f(x) = x2 + 2x - 7 and the tangent line to the graph at the point whose x-coordinate is 1.
A. 
B. 
C. 
D. 
Answer: A
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Write the set by listing its elements.{a|a is a natural number greater than 9}
A. {9, 18, 27, ...} B. {9, 10, 11, ...} C. {10, 11, 12, ...} D. {10, 12, 14, ...}
Solve the absolute value equation or inequality. Give the solution set in interval form.
< 4
A. (-?, 6)
B. 
C. 
? 
D. 
Solve the system in terms of the arbitrary variable listed.z;x + 3y + 2z = 11 4y + 9z = -12
A. 
B. 
C. 
D. 
Solve the problem.During the first five months of the year, Len earned commissions of $3980, $2430, $2450, $2450, and $2370. If Len must have average monthly earnings of at least $2620 in order to qualify for retirement benefits, what must he earn in the sixth month in order to qualify for benefits?
A. at least $2040 B. at least $2736 C. at least $2620 D. at least $2716